Coaster-brake.



G. W. VAN DEREN. COASTER BRAKE.

APPLICATION FILED JAN- 3.1914.

Patented Nov. 2, 1915.

3 SHEETS-SHEET l.

snow/01 Q G'E ORgEw if) COLUMBIA FLANOEIRAPH co.. WASHINGTON, D. c.

G. W. VAN DEREN.

COASTER BRAKE.

APPLICATION FILED JAN-3.1914.

M W a Patented Nov. 2, 1915.

3 $HEETS-SHEET 2.

GeoRQE UlVaN DERE'N mwmv G. W. VAN DEREN.

COASTER BRAKE.

APPLICATION FILED JAN. 3, 1914.

1 1 58,75 1 Patented Nov. 2, 1915.

3 SHEETS-SHEET 3 ceases se er' eriee News Specification of LettersPatent.

"Patented Nov. 1915.

Application iileltl January 3, 1914. Serial No. 810,222.

To all whomlz't mag concern:

Be it known that I, Gnonon YAN DnnnN, a citizen of th e United States,resid- 'movement ofthe driving ing at ElmiraQin-the county of Chemungand State'of N ew York, have invented certain new and usefulImprovements in CoasterQBI-akes, of which the following s aspecification, reference being had to the accompanying drawings. I

- This invention relates to new and useful improvements in coasterbrakes for vehicles and the like, the ma'inobject of the in ventionbeing to provide an improved structure of this character in which amaximum braking surface is provided without changing the well knownshape of the ordinary hu 1 Another object oftheinventicn is theprovision of a coaster brake which is largely used upon the hub of therear wheel of a bicycle or motor cycle and is especially designed t beont o l d, by the r r f r th purpose of rotating the wheels .of abicycleand propelling the vehicle forward or to permit the wheel to revolvefreely or to brake the wheel and retard or check the movement of thebicycle or motor cycle.

A further object of the invention is the provision of an improved brakewhich will utilize a large braking snrface without injuryto any of theparts whereby a quicker.

and better braking action will result.

A still further object of the invention is the provision of a device ofthis character wherein the expanding brake shoe is utilized to assist inthe driving movement .ofthe hub whereby the hub and the parts containedtherein will rotate simultaneously.

A still further object of the invention is the provision of a coasterbrake wherein the expanding brake shoe is held from engagement with thedriving clutch until the rotary speed of the driving clutch and thebrake shoe has reached a substantially uniform speed so that theclicking of the clutch members which generally results from thisengagement will be almost entirely eliminated. i i

A still furtherobject of the invention is the provision of acoastenhrake wherein the driving clutch is yieldably thrown out'ofengagement and the braking clutch is en,- gaged gust .as soon as theforward rotary medium is stopped so t TIHi llPQII- ShghtlEZfiClQWflfdmovement of the driving medium, the expanding brake shoe will be throwninto engagement with the barrel of the hub to retard the movement of thevehicle.

A still further object of the invention is the provision of a coasterbrake of the above character which will possess advantages in points ofefliciency and durability, is inexpensive to manufacture and at the sametime is simple in construction and operation.

lVith the above and cthez objeots in view, the nv n i n consists in theof construction and the combination and arrangement ofpants to behereinafter more fully described, pointed out in the claims and shown inthe accompanying drawings,

in which Figure 1 1s a longitudinal sectlonal view of a coaster brakeconstructed 1n accord-- ance with my invention; Fig. 2 is a transversesectional view; Fig. 8 is a transverse sectional view taken on the line3-3 of Fig. '1 the movable collar being eliminated; Fig. l is atransverse sectional view taken on the line H of Fig. 1;Fig. 5 is atransverse sectional view .taken on the line .55 of Fig. 1; Fig. 6 is alongitudinal sectional view of the device taken at: right angles to theshowing in Fig. 1; Fig. 7 is a detail perspective view illustrating themodified form of the braking levers; Fig. 8 is a detail .per spectiveview illustrating another modified form of the braking levers; Fig. 9isa detail perspective view illustrating still another modified'form ofthe braking levers; Fig. 10 is a longitudinal sectional view through thebrake illustrating a slightly modified form; Fig. 11 is a detailperspective view of one end of one of the brake shoes; and Fig. 12 is adetail sectional view illustrating the relative positions of the brakeshoe and one offthe clutch rings.

Referring more particularly tothe drawings, 1 indicates .the stationaryaxle threaded at each. end and adapted to be locked within the rearfor-ks of the bicycle and retained in such position by means oft-he nuts2 and 2 threaded upon the outer ends of the axle and adapted forengagement with the lower circular ends 3 of the forks 4 to retain theaxle in its effective position. The axle 1 is provided with a centralsmooth portion; generally indicated by the numeral 5 and mounted thereonfor rotary movement is'ithe inner hubcmember 6: This inner hub novelfeatures 'member 6 is preferably substantially rectangular in form andof such dimensions I that the width of two of the side portions thereofis greater than the other two side portions and the smaller of the twoside prtions are preferably arcuate in form, as indicated at 7, tocoincide with the semi-circular interior of the brake shoe whichcomprisesthe two sections 8 and 8. The wider side portions of the innerhub are provided at a central point with the longitudinal grooves 9, themedial portions of which are arcuate, as shown at 10, and one of theside walls of each of the recesses 1s lnchned, as

shown at 11, while the other side wall of each of the recesses ispreferably perpendicular, as shown at 12. The two sect1ons 8 and'8 ofthe brake shoe are arranged 1n spaced relation at their longitudinaledges,

as shown at 13, and arranged between the longitudinal-edges of thesections of. the

brake shoe are the braking levers 14, the

inner edges of which are reduced, as shown i at 15, and adapted toberdisposed within the longitudinal grooves 9 so that upon ro tarymovement of the inner hub member 6, in either direction, the innerlongitudinal edges 15 will be engaged with either of the sidewalls ofthe groove whereby the outer longitudinal edges of the braking leverswill force the longitudinal edges of the sections of the brake shoeapart and frictionally engage the outer periphery of the brake shoewith-the interior of the outer hub member 16 so as to retard the rotarymovement of the same. Outward longitudinal movement of the brakinglevers 14 is prevented by the tapering ribs 17 which are formed uponopposite sides of the brakinglevers and are adapted to engage theinterior of the brake .shoe sections upon each side of the longitudinaledges thereof.

In Fig. 7, I have illustrated a slightly modified form of braking lever14 wherein modified form of braking lever 1 1 wherein the width of thesame is equal from the outer longitudinal edge to theinner longitudinaledge. This form of braking lever isheld in its effective position inamann'er-similar to the retaining means ofthe lever 1 1.

,- In Fig. 9,1 have illustrated stillanother modified form of brakinglever 14: wherein the inner longitudinal edge thereof is tapered, asillustrated at .19, and this tapering portion is adapted to be disposedwithin the longitudinal grooves .9- and "each side thereof enga'gedwiththe side walls of the nut 2. 7

grooves. This form of brakingflever will also be retained 1n poslt on ina manner sinnlar to the modified forms above described.

On'e end of the inner hub member ,6 is

provided with a circular enlargement 20 having upon 1ts lnner-faceaconcave annular recess 21 and further provldedlwlth an annular flange 22arranged adjacent the recess which is adaptedto be disposed just withinone end of the hub barrel 16 soas to retain the ball bearings 23 whichare dis-.

posed between the enlarged member 20 and the hub barrel .16. Theenlarged portion 20 is further provided upon its periphery with. if

a threaded portion 24 upon which is mounted the sprocket wheel 25. Thesprocket wheel 25 is retained in position by means of the locking nut26and theannular flange 27 between which said sprocket is'disposed'threaded portion 24. 7

The circular enlarged portion and rigidly held against'movement upon the20 of the inner hub member 6 is provided within its outer end with anannular recess 28 having '1 'ball races 29 formed therein inwhich theball bearings 30 are arranged, said ball bearfings being retained inposition by means of the'cone member 31, said cone member being threadedupon the end of the axleland adapted to retain the inner hub member 6 inposition. It will be noted from the. draw 'ings that the cone member 31is securely held upon the end of the axle by means of the The hub barrel16 is provided with an inand arranged within the hub barrel is "a r'terior threaded portion, as indicated at 32 collar 33' having eiterionscrew threads 7 adapted for engagement .with the screw threads 32 uponthe interior of the hub barrel. Thecollar 33 is provided with a clutchface, as indicated at 34:, which is'adapted for engagement with. theclutch face 35v upon the movable collar 36. Mounted upon the inner hubmember 6 and disposed between theen larged portion 20 and the collar 36is a coil spring 37 which is adapted to yieldably' disengage the twoclutch faces3 1 and 35 when drivlng powerhas been released so as toreadily permit the rotation of the innerhub' member and parts connectedtherewith,

within the hub barrel 16. r r

Each section of the brake shoe is provided 7 V at each end with acentrally arranged re cess 38, the recesses atone end'of thebrake shoebeing adapted to receivethe'oppositely7 dlsposed lugs 39 formedjupon theinner face, of the-collar 36 so that the collar and the brake shoe willrotate simultaneously. Arranged around the inner hub'member 6 and thecoil spr1ng37 is' a ring 40 which is provided at diametrically oppositepoints with the spaced-parallel arms- 11, said arms being threaded upontheir outer" faces, as'jindic'atedi at 612, and adapted to projectthrough the. re-

cesses a3 formed in the inner face of the collar 36 and extend intotheannular recess e4: formed in the end of the brake shoe and threadedthereon is the stop nut 45 which limits the longitudinal slidingmovement of said arms by engaging the inner face of the collar 36, asclearly illustrated in Fig. 1. Itv

will be noticed that the face of the ring L0 opposite the arms 41 isprovided with a smooth surface adapted to frictionally e11- gage theinner face of thecollar 33.

it will be understood that during the forward movement ofithe bicycle,motor cycle or other vehicle, the outer hub barrel 16 will be rotatingwith the rear wheel and upon the forward rotary movement of the sprocketwheel by the driving medium, the ring 40, through the medium of the coilspring 4E6, which is mounted upon thearms 41, will be thrown intofrictional engagement withthe inner face of the collar 33 and it will beseen that by having the arms -21 projecting through the recesses 43 inthe collar 36, the collar 36 and the brake shoe will be rotated and willcontinue to be rotated until the same is rotated at substantially thesame speed as theouter hub barrel until the clutch faces and are throwninto engagement. From this it will be seen that if the hub barrel isrotating at a certain speed, the engagement of the ring to with thecollar 33 will tend to rotate the collar 36 and the brake shoe until thesame has acquired substantially the same speed, as the hub barrel, andthe clutch members 3% and are entirely engaged for driving the hub.

It will be understood that while the inner parts of the hub member 16are retained in a stationary position, the ring 40 will be arranged inspaced relation from the collar 33 a sutlic'ient distance so that thetwo faces will not be thrown into engagementiultil the forward rotarymovement of the inner hub member has begun. It is preferred to have a.space of about one-thirty-second part of aninch between the two faces ofthe parts 40 and a Mounted within the hub barrel 16 and arranged at theopposite end of the brake shoe from the collar 36 is a sleeve 47 havingformedupon its inner face the diametrically disposed lugs 48 which areadapted to be arranged. within the central recesses '38 formed withinthe sections of the brake shoe at the ends thereof. The sleeve 47 isprovided with an outer clutch face 4x9 which isadapted for engagementwith a similar clutch face 50 formed upon the inner end of the conemember 51. The cone member 51 is threaded upon the end of the axle 1opposite theicone member 31 and is provided with an. inner ball race 52which retains the ball bearings in place and is further provided with anannular flange 54 whichis disposed just within tl'ie lend of the hubbarrel-topi-event dirt and other particles from entering the same. Theouter endof the cone member 51 is provided with a suitable recess 55 inwhich isarranged the inner end of the brake arm 56, said brake arm beingretained securely in position by means of the circular portion 3 of theframe and the nut 52.

The sleeve at? is provided upon its interior with a plurality of screwthreads adapted for engagement with the screw threads 57 formed upon thecollar 58, said collar being mounted upon the reduced portion 59 of theinner hub member and is provided upon its outer face with diametricallydisposed lugs 60 which are provided with the opposed cam faces 61adapted for engagement with the opposed cam faces 62 formed on the diametrically disposed lugs 63 of the collar 64:.

,The collar 64 is mounted upon the reduced portion '65 which is formedupon the end of the inner hub member 6 and is preferably smaller indiameter than the reduced portion 59.

The collar 64 which is mounted upon the reduced portion 65 of the innerhub member .6 is held securely in place so that the same will rotatewith the inner hub member by means of the stop nut 66 which is threadedupon the reduced inner end 67 of the hub member 6 and it will be furthernoticed from the accompanying drawings that the collar 58 is rotatableupon the r duced portion 59 of the inner hub membc; 6,, while thereduced portion 65 is of the same shape as the inner hub member and thecollar 64 which is mounted upon this reduced portion is provided with acentral opening to tightly fit this reduced portion so that said collarwill rotate with the inner hub member. 1 Furthermore, the collar 64 isretained .in position upon the reduced portion 65 by means of the nut66, the nut 66 rotating with the inner hub member 6. It will beunderstood that the inner hub member 6 is normally retained in astationary position, thus the collar 64- and the nut 66 will remainstationary also but upon rotation of the hub member in either direction,the aforesaid collar and nut will rotate therewith.

In Fig. 10, I have illustrated a slightly modified form embodying oneend of the hub wherein the means for retaining the brake shoe and collar36 against movement is eliminated and in this form of the device therecesses l3 which are formed upon the inner periphery of the collar 36are eliminated, thus making the collar much stronger than in thepreferred form In this form of the invention, the clutch faces Set and35 are quickly thrown into engagement by the forward movement of thesprocket It will be noticed that .upon the forward movement of thesprocket 25, the cam faces 62' and 611 willlcoaact .to force the intakeshoe and the collar 36 laterally so that "the clutch faces 34 and 35willbe engaged 'placing the spring 37 under tension and it will be notedthat the tension of the spring 37 will force the brake shoe in theopposite direction after the driving power has been released, thusdisengaging the clutch faces 34- and 35v and permitting the parts uponthe interior of the hub barrel to remain stationary during the rotationof the barrel and the wheel mounted thereon,

From the above description takenin con- "nection with the accompanyingdrawings,

it will be readily understood that the operv ation of my improvedcoaster brake will be substantially .as follows: During the forwarddriving movement of the sprocket "Wheel 25, the clutch faces 34L and 35are engaged so that the hub barrel 16 and the wheel connected therewithwill be rotated simultaneously with the, parts contained within the hubbarrel. Furthermorait will be noticed that by construction of the innerhub member with respect to the brake shoe, the forward" rotary -movementof the sprocket wheel will impart the same movement to the inner hubmember and expand the sections of the brake shoe so that they cam faces62 will force the brake shoe and member 31 is also provided with'theball bearings 30 to eliminate friction between the same and the innerhub member. It will be understood that upon the forward driving movementof the inner hub member, the cam faces 61 and 62 will engage so that thethe sleeve47 laterally upon the, inner hub member, thus disengaging theclutch faces l9 and 50. It will be noted from the illustration shown inFig. 10, that the collar' 58 is slidably mounted upon the reduced por-'tion 59 so that the above mentioned movement of the sleeve 47 may bereadily obtained through the medium of this collar and the engagement ofthe cam faces 61 and 62. \Vhen it is desired to release the drivingmovement, the rotation of the sprocket 25 is stopped throughmanualoperation by the driver and as soonas the forward dr ving movement isstopped, the ten sion of the spring 37 willforce thebrake shoe and thecollar 36 laterally upon the inner hub member and engage'the clutchfaces 49and 50. It will be seen that upon backward rotary movementof thesprocket 25, the inner hub member 6 will berotated so that the sidewalls of the groove 9 will It will also be noticed that during 7 engagewith the inner longitudinal edges of the braking levers 14, forcing theedges 'of the brake shoe sections apart and'frictionally engagingtheouterperipheries of1 the brake shoe withthe innerperiphery of the hubbarrel and thus retard the rotary movement of the hub barrel and thewheel carried thereby. It will be'understoodthat assoon 5 as the actionagainst the braking levers 14; is stopped, the rotation of the hubbarrel 16' y will tend to force the sections of the brake shoe back totheirnormal position and upon forward rotary movement'o'f the sprocket25, the cam faces 61 and 62 :will force the V 86 the clutch faces 34and-35 will be engaged brake shoe and the'collar 36 laterally so that torotate. the outer'hub barrel 16. i It will i benoticed that by havingthecoil spring the collar 36 andLth-e ring 40, the lateral movement of thecollar 36 will tend to place the spring under tension and force thering.

40 againstthe face of the collar 33 'so that the ring l0 will be forcedto rotatemwith thejgo.

collar and from this it-will be noted that 46 mounted upon the arms 41of the ring 40 i i v and arranged within the recess 687between g5 therotation of the ring will rotatethe collar 7 36 and the brake shoe andwill continue to rotatethe same untilthey have reached a speedsubstantially the same as the rotary speed of the outer'hub barreland'the clutch faces 34: and35 are en'gaged, thus eliminating theclicking sound of the clutch members which generally occur with theusual form of brakes now in use. 7 r

From the above description taken in con nection with the accompanyingdrawings, it

will be readily apparent thatI have provided a simple and durablecoaster brake wherein the expanding brake shoe is not only utilized toretard the rotary movement of the hub barrel'but is utilized to as sistin the forward driving movement of the hub barrel so that more power maybe obtained than 1 with the form of coaster brakes now in use. It willalso be apparent that I have provided an improved coaster brake whichwill utilize a large braking sur face without injury to any of the:parts whereby a quicker andbetter braking action will result. The deviceas herein shown and described is extremely simple in its constructionand can be manufactured and vpla'cedupon any wheel upon the market atthe present time at a very small'cost.

While .I have shown and described the:

preferred form of my invention,it will be obvious that various changesin the details of construction and in the proportions may be resorted tofor successfully carrying my the scope of the appendedcl'aim's.

That I claim is& or -.l.- A coaster. brake including ahub'formedinvention into practice :without' sacrificing j any of the novelfeatures; or departing from with a barrel, and an axle extendingtherethrough, a sectional brake shoe withinthe barrel, an inner hubmember mounted upon the axle and arranged within the brake shoe,- andbraking levers arranged between the sections of the brake shoe andco-actin'g with the inner hub member means whereby to rotate said hubmember in either direction to expand the brake shoe against the:

tions-of the brake shoes and having their inner longitudinal edgesdisposed Within said grooves, means whereby to rotate-said hub member ineither direction to expand the brake shoe against the inner periphery ofthe barrel.

3. A coaster brake including a' hub formed with a barrel, a sectionalbrake shoe including semi-circular sections having. central recesses ateach end thereof, collar within the barrel having opposed lugs on oneface thereof adapted to be arranged withi-irthe recesses at one end ofthe brake-shoe, a clutch face formed upon the opposite side of saidcollar, a secondcollar connectedwith 4 the barrel and having" aclutchface an ranged in opposed relation with the first clutch face, asleeve at the other end of the brake shoe, opposedlugsformed upon oneface of the sleeve and adapted to be' ar ranged within the recesses inthe brake shoe adjacent the sleeve, a clutch member formed upon theother face of said sleeve,

a non-rotative clutch member to be engaged by the clutch member on thesleeve to hold the sectional brake shoe against rotation, and means fordisengaging the clutchmernher on the sleeve from the non-rotative clutchmember and successively forcingthe brake shoe longitudinally to engagethe first clutch faces. a

4. A coaster brakeincluding a hub formed with a barrel, and an axleextending therethrough, an inner hub member rotat'ably mounted upon saidaxle, a sectional brake shoe within the barrel and having centralrecesses formed in the ends'of each of the sections, means for expandingthe brake shoe against the inner periphery of the barrel, a sleevewithin the barrel, opposed lugs upon one end of the sleeve adapted to bearranged within the recesses at one end of the brake shoe, a clutch faceformed on the outer end thereof a cone member carried by one end of theaxle and having a clutch face adapted to engage the clutch face "of thesleeve, means for forcing said-clutch faces into engagement with eachother, camed faced lugs carried by said sleeve and a second set of camfaced lugs carried by the inner hub member and adapted toengage thefirst lugs to move the sleeve laterally within the barrel to disengagethe clutch members, as and for the purpose set forth.

5; A coaster brake including ahub formed with a barrel, a sectionalbrake shoe adapted to engage the inner periphery of the bar rel-, havingcentral recesses formed in each end of the sections of the shoe, meansfor expanding the brake shoe against the inner periphery-of the barrel,a collar within the barrel, lugs formed integral with the collar andarranged within the recesses at one end of the brake shoe, a clutch faceformed upon said collar anda-clutch member carriedby the barrel. andadapted to engage said clutch face, means for moving the first clutchfacelaterally to engage the same With the second clutch face, as and forthe'purpose set forth;

6.- A coaster brake including a hub formed with a barrel, and an axleextending therethrou'gh, a sectional brake shoe arranged within thebarrel, a substantially rectangular inner hub member mounted upon theaxle and arranged within the barrel, a sprocket wheel carried by one endof the hub member to rotate the same, longitudinal grooves formedinopposed faces of the inner hub member, an inclined side wall formedwithin each of said grooves, and a perpendicular side wall formed ineach of said" grooves, braking levers having one of their longitudinaledges arranged between the sections ofthe brake shoe and'their innerlongitudinal edges disposed within said grooves and adapted to engagethe side walls thereof upon rotary movement of the brake shoe in eitherdirection to expand the sections of the brake shoe'again'st' the innerperiphery ofthe barrel and means for retaining said shoes againstrotation with respect to the barrel.

7. A coaster brake including a hub formed with a barrel, an axleextending t'heremember on, the sleeve, means for moving said sleevelaterally to engage said clutc'h faces with each other and actuate thesec tions of the brake shoe, a collar threaded within the sleeve andhaving opposed cam faced lugs, aring carried by the inner hub member andhaving opposed cam faced lugs through, an inner hub member mounted uponthe axle, a sectional brake shoe moLmted upon the inner hub member,means for expanding said brake shoe against the inner I periphery of thebarrel, a collar at one endof the brake shoe and mounted upon theinner'hub member, a clutch face formed on said collar, whereby to impartlateral movement to a clutch face carried bythe barrel and adapted tonormally engage the first clutch face, an enlarged portion formed uponone end of the hub member, means for rotating the inner hub memberwhereby to engage said clutch faces, a coil spring mounted upon the hubmember and disposed between said collar and the enlarged portion to movethe brake shoe and collar laterally upon the inner hub memberin onedirection to disengage said clutch faces.

9. A coaster brake including a hub formed with a barrel, and an axleextending there- 7 through, an inner hub member mounted upon the axle, asectional brakeshoe mounted upon the inner hub member, a collar at oneend of the brake shoe and mounted upon the inner hub member, an enlargedportion formed upon one end of the hub member, a

coil spring mounted upon the inner hub' member and disposed between saidcollar and the enlarged portion to move the brake shoe and collarrearwardly upon the inner hub member in one direction, and means wherebyto move the brake shoelaterally upon the inner hub member against thetension of said spring, as and for the purpose set forth. 1

10. A coaster .brake including a hub formed with a barrel, a sectionalbrake shoe within the barrel, having an annular recess within one end,and further provided with, opposed recesses, a collar arranged withinthe bore of the barrel having lugs arranged within said recesses, andprovided with clutch face, a second collar arranged within the :bore ofthebarrel, a clutch face and an annular smooth face upon said collar, aring within the barrel and adapted to fric. tionally engage the smoothface and means arranged between said first collar and the ring foryieldably forcing said ring into engagement with the smooth face of thecollar, as and-for the purpose set forth. I I

11. A coaster brake including a hub formed with a barrel, asectionalbrake shoe within the barrel havingan annular recess at one endand further provided 'with opposed recesses in the ends thereof, acollar within the barrel, opposed lugs formed on the collar adapted tobe arrangedwithin w said recesses, a clutch face formed upon theopposite side ofsaidcollar, said collarbe ing provided with opposedrecesses, a sec- I 0nd collar carried by the barrel, a clutch faceformedthereon and arranged inop-V posed relation with the first clutchface,

'means for actuating the first collar to engage the clutch face thereonwith the clutch face on the second collar, said second collar havingasmooth portion formed adjacent the clutch face, a flat-ring within thebarrel having arms projecting through said recesses in the first collarand into the annular recessin the brake shoe, a stop nut threaded uponthe inner ends of said arms, a-nd a coil spring arranged between thering and the first collar, as and for the purpose set forth.

12. A coaster brake including a hub ranged within the barrel,diametricallyop posed lugs extending from one face of the collar,said-lugs being adapted to seat in the 1 diametrically opposed recessesof the shoe,

said collar being also providedwith diametrically opposed recesses,clutch teeth formed on that face of the collar which is remote from theshoe, a second collar ar ranged within the barrel and provided on oneface with clutch teethadapted to engage with the clutch teeth of thefirst collar,

means operable for engaging. the clutch members, a ring arranged withinthe barrel" and provided with arms projectingv through the recesses inthe first mentioned c'olla-r and Y into the annular recess of the brakeshoe, a

stop nut threaded on the inner end of said arms, and ahelical springwound about said arms and interposed between thefirst men- V tionedcollar and the ring for normally holding the clutch members ininoperative relation.

13. A coasterbrake including hub formed with a barrel, asectional brakeshoe therein having an annular recess at one end and further providedwith opposed. recesses" 1n the end of the brake shoe,1 means for ex-.

panding the shoe against theinner periphcry of the barrel, a collar thebarrel having lugs adapted to engage. within said opposed recesses, aclutchlmember formed upon the opposite face of said collar, a collarcarried by the barrel and having a clutch 1 member, means for engagingsaid clutch member to rotate the barrel, and an annularj smooth portionformed upon one face thereof, said first mentioned collar being provideduponits innerperiphery with opposed recesses, a flat ring within thebarrel, oppositely disposed arms formed integral withv the ringand'extending through said recesses in the collar into the annularrecess of the brake shoe, a stop nut threaded upon the inner ends ofsaid arms and a coil spring mounted upon the arms and disposed betWeenthe ring and the first collar to yieldably engage the ring With theannular smooth portion of the second collar, as and for the purpose setforth.

14%. A coaster brake including a hub formed With a barrel, an axleextending therethrough, a substantially rectangular inner hub membermounted upon the axle and having longitudinal grooves formed in opposedfaces thereof, a sectional brake shoe mounted upon the inner hub memberWithin the barrel, braking levers having their outer longitudinal edgesdisposed between the sections of the brake shoe and their innerlongitudinal edges disposed Within said grooves, whereby upon rotarymovement of the inner hub member, the inner longitudinal edges of thebraking levers will be engaged by the Walls of the grooves to oscillatethe same and expand the'sections of the brake shoe against the innerperiphery of the barrel, and longitudinal ribs formed upon oppositesides of the braking levers to prevent lateral movement of the same.

In testimony whereof I hereunto aflix my signature in the presence oftWo Witnesses. GEORGE W. VAN DEREN. Witnesses:

R. H. V. DANN, FRANK J. GoRMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.?

